@vixen2011
The reason could be corrupted files in the game folder.
How to check it?
Go to Documents/ElectronicArts - inside will be The Sims4 folder
Step 1. Rename The Sims4 folder to "The Sims4 old"
Step 2. Fix the game in Origin
Origin/Library - right click on TS4 - option "Repair game"
You have to wait until Origin will fix all packs, not only the base game.
Step 3. Turn on the game - a new game folder will be created and you will have two - one old, one new
Step 4. Check if you still have this problem in the newly created game folder. Start a new game with random sim, save it and quit. Try to start again this saved game.
If the problem disappeared
Step 5. Delete in the new game folder following folders:
"saves" and Tray.
Step 6. Go to "The Sims 4 old" folder and copy - your "saves " folder.
Step. 7, Paste this folder in a newly created game folder.
Step 8. Do the same with Tray folder and TrayDeleteItems file
Step. 9. If all is OK - delete The Sims4 old folder. Now you will have only one game folder working properly.
If the new folder will not work with old save, it means that the old save is so damaged that it can not be repaired.
If it will not work even with this new test save in the new game folder could you post your Computer's DxDiag?
To gather a DxDiag on your computer, please follow the steps here: https://help.ea.com/en-us/help/pc/how-to-gather-dxdiag-information/
You can attach the text file to your post directly in option "Reply" - not Quick Reply
I don't work for EA